CN108109584A - Driving circuit and its operation method - Google Patents
Driving circuit and its operation method Download PDFInfo
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- CN108109584A CN108109584A CN201711200484.4A CN201711200484A CN108109584A CN 108109584 A CN108109584 A CN 108109584A CN 201711200484 A CN201711200484 A CN 201711200484A CN 108109584 A CN108109584 A CN 108109584A
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3275—Details of drivers for data electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
- G09G5/005—Adapting incoming signals to the display format of the display terminal
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
- G09G3/3266—Details of drivers for scan electrodes
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2340/00—Aspects of display data processing
- G09G2340/04—Changes in size, position or resolution of an image
- G09G2340/0407—Resolution change, inclusive of the use of different resolutions for different screen areas
- G09G2340/0435—Change or adaptation of the frame rate of the video stream
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/12—Frame memory handling
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2360/00—Aspects of the architecture of display systems
- G09G2360/18—Use of a frame buffer in a display terminal, inclusive of the display panel
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G3/00—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes
- G09G3/20—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters
- G09G3/22—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources
- G09G3/30—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels
- G09G3/32—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED]
- G09G3/3208—Control arrangements or circuits, of interest only in connection with visual indicators other than cathode-ray tubes for presentation of an assembly of a number of characters, e.g. a page, by composing the assembly by combination of individual elements arranged in a matrix no fixed position being assigned to or needed to be assigned to the individual characters or partial characters using controlled light sources using electroluminescent panels semiconductive, e.g. using light-emitting diodes [LED] organic, e.g. using organic light-emitting diodes [OLED]
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- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Control Of El Displays (AREA)
- Control Of Indicators Other Than Cathode Ray Tubes (AREA)
- Electroluminescent Light Sources (AREA)
Abstract
The present invention discloses a kind of driving circuit and its operation method.Driving circuit couples display panel.Driving circuit includes memory.Driving circuit operation method comprises the steps of：(a) driving circuit receives the image data for including N frame images, and N is positive integer；(b) in the first segment time, the first frame image in image data is write into memory with first direction；And (c) is first read first frame image with second direction from memory and output writes the second frame image in image data into memory to display panel, then with second direction in the second segment time.Wherein, the second segment time is later than the first segment time and second direction and first direction are on the contrary, cause the first frame image that step (c) is read and self reversion of the first frame image of step (b) write-in to memory.
Description
Technical field
Present invention system is related with display device, especially with respect to a kind of driving circuit and its fortune applied in display device
Make method.
Background technology
As shown in Figure 1, traditional Organic Light Emitting Diode (Organic Light-EmittingDiode, OLED) driving
Device DR interior would generally have memory M (such as SRAM) and be used as frame buffer (Frame buffer).When raw video data
DAT0 is after front end source HAP processing, and treated, and image data DAT can be transferred into OLED drivers DR and be connect with a line
The mode for a line (Line-by-line) is written into being stored in memory M.When being intended to image data displaying DAT, OLED
Driver DR can be read image data DAT in a manner of a line then a line from memory M and be sent to display panel PL again.This
When, the gate pole driver GD (such as Gate On Array (GOA) circuit) on display panel PL can sequentially carry out forward direction (by upper
Under) scan (Forward scan) action S, cause the image data DAT that OLED drivers DR is transmitted that can be connect with a line
The mode for a line is stored in every one-row pixels (Pixel) on display panel PL, uses and display panel PL can normally be shown
Show image data DAT.
However, sometimes display panel PL needs the (Up-side that puts upside down up and down for the design in response to system authority
Down), if the positive display of script to be maintained at this time, the processing of reversion (V-flip) up and down must just be carried out.For example, scheme
2A is that the display panel PL (being sequentially from top to bottom the first row pixel G1 to nth row of pixels GN) not put upside down up and down originally is shown not
Through the image data DAT for inverting processing up and down；Fig. 2 B are that the display panel PL to put upside down up and down (is sequentially from top to bottom Nth row
Pixel GN to the first row pixel G1) show the image data DAT without inverting processing up and down；Fig. 2 C are the display put upside down up and down
Panel PL (being sequentially from top to bottom nth row of pixels GN to the first row pixel G1) displays are by reversion treated image number up and down
The positive display of script can be maintained according to DAT.
In order to achieve the purpose that it is above-mentioned allow image data DAT up and down invert, following several method usually can be used：
(1) as shown in figure 3, after can pass through front end source HAP to original image data DAT the progress up and down processing of reversion
OLED driver DR are resent to, and what OLED drivers DR was sent to display panel PL also can be the image data inverted up and down
DAT’.However, since such method need to use the front end source HAP of reverse function above and below support image, in practical applications, often
It can cause front end source HAP that can not operate in normality image reversing mode up and down because of consistency problem, cause front end
Source HAP generates the image data DAT ' to OLED drivers DR inverted up and down in which can not be successfully.
(2) as shown in figure 4, when OLED drivers DR transmission without inverting the image data DAT of processing to display surface up and down
During plate PL, gate pole driver GD can be scanned the scan direction that display panel PL is scanned by forward direction originally from top to bottom
(Forward scan) change into from down to up reversely scan (Reverse scan), cause the meeting shown by display panel PL
It is the image data DAT inverted up and down.However, since such method need to use the gate pole driver of the reversed scanning function of support
GD, but display panel PL now because narrow frame (Slim boarder) demand and area is fairly limited, gate is caused to drive
Dynamic device GD be only capable of selection forward direction scan or reversely scan and can not both take into account, lack and use upper elasticity.
(3) as shown in Fig. 5 A and Fig. 5 B, it also can pass through OLED drivers DR and in a reverse direction write image data DAT
Memory M and image data DAT is read from memory M, that is, OLED drivers DR reads memory M using opposite direction
Image data DAT is taken and writes, cause that OLED drivers DR is sent to display panel PL also can be the image number inverted up and down
According to DAT.
However, OLED drivers DR is by image data by the way of a frame then a frame (Frame-by-frame)
DAT writes memory M and reads image data DAT from memory M, no matter using Fig. 5 A just writes backward read mode or Fig. 5 B
The positive read mode of retrography, as shown in Fig. 6 A to Fig. 6 B and Fig. 7 A to Fig. 7 B, within the same frame cycle (such as second frame cycle T F2),
Since the time t2 for the read action R1 that frame data is read from memory M can be write earlier than by current frame data to memory
The time t3 of the write activity W2 of M, and write activity W2 write-in direction (from top to bottom, from the first row of memory cells L1 to
Y row of memory cells LY) with the read direction of read action R1 (from the bottom to top, from Y row of memory cells LY to the first row
Memory cell L1) it is opposite each other so that and the part frame data stored by memory M is likely to not yet driven by OLED
Dynamic device DR is covered before reading with regard to the current frame data first by OLED drivers DR write-ins.
When image data DAT is dynamic menu, the above situation will cause occur tear effect in dynamic menu
(Tearing effect).Therefore, in the case that such method is usually only applicable to image data DAT as tableaux, cause
Its use scope and practicability are seriously limited.
The content of the invention
In view of this, the present invention proposes a kind of driving circuit and its operation method, is met with effectively solving prior art
The above-mentioned variety of problems arrived.
A specific embodiment according to the present invention is a kind of driving circuit.In this embodiment, driving circuit coupling display
Panel.Driving circuit includes receiving unit, memory, processing unit and output unit.Receiving unit to receive image data,
Image data includes N frame images, and N is positive integer.Processing unit is respectively coupled to receiving unit and memory.In the first segment time
Interior, processing unit is write the first frame image in image data into memory with first direction.In in the second segment time, locate
Reason unit first reads first frame image with second direction from memory, then with second direction by the second frame shadow in image data
As write-in is into memory.Output unit is respectively coupled to processing unit and display panel, to export first frame image to display
Panel.Wherein, the second segment time is later than the first segment time and second direction and first direction are on the contrary, cause processing unit from storage
The first frame image that device is read is write with processing unit to self reversion of the first frame image of memory.
In an embodiment, display panel is Organic Light Emitting Diode (OLED) display panel.
In an embodiment, first direction and second direction are respectively direction from top to bottom and direction from the bottom to top.
In an embodiment, in the second segment time, processing unit writes the second frame image to evening time of memory
The time of first frame image is read from memory in processing unit and write-in direction and read direction are second direction, is caused
Processing unit writes the second frame image to the first frame image that not yet processed unit reading will not be covered during memory, to keep away
Exempt from tear effect (Tearingeffect) occur.
In an embodiment, in the 3rd time, processing unit reads the second frame shadow with first direction from memory
Picture is simultaneously exported through output unit to display panel, wherein the 3rd time is later than the second segment time.
In an embodiment, if being write in processing unit in the 3rd time and no-trump image to the action of memory,
In in the 4th time, processing unit read with first direction from memory the second frame image and through output unit export to
Display panel, wherein the 4th time be later than the 3rd time.
In an embodiment, in the 3rd time, after processing unit is completed to read the action of the second frame image, handle
Unit is again write the 3rd frame image in image data into memory with first direction；In in the 4th time, processing is single
Member is read from memory the 3rd frame image with second direction and is exported through output unit to display panel, wherein at the 4th section
Between be later than the 3rd time.
Another specific embodiment according to the present invention is a kind of driving circuit operation method.In this embodiment, driving electricity
Road operation method is operating driving circuit.Driving circuit couples display panel.Driving circuit includes memory.Driving circuit is transported
It is comprised the steps of as method：(a) driving circuit receives image data, and image data includes N frame images, and N is positive integer；
(b) in the first segment time, the first frame image in image data is write into memory with first direction；And (c) in
In the second segment time, first frame image is first read from memory with second direction and is exported to display panel, then with second party
It is write to by the second frame image in image data into memory；Wherein the second segment time is later than first segment time and second party
To with first direction on the contrary, causing the first frame image and the first frame shadow of step (b) write-in to memory that step (c) reads
As self is inverted.
Compared to the prior art, driving circuit and its operation method according to the present invention are using a kind of novel memory
Write-in and read method can not only coordinate the display panel put upside down up and down to carry out the image data of script positive display anti-up and down
Turn, also can effectively avoid traditional driving circuit and tear effect caused during reversion up and down is carried out to dynamic menu, therefore, this
The driving circuit and its operation method of invention are not required to through gate pole driver (such as the GOA electricity on front end source and display panel
Road) image data is carried out to invert the reversion up and down that tableaux and dynamic menu can be achieved at the same time up and down, therefore can significantly increase
Add its use scope and practicability.
It can be obtained further by following detailed description of the invention and institute's accompanying drawings on the advantages and spirit of the present invention
Solution.
Description of the drawings
Fig. 1 is the schematic diagram of traditional Organic Light Emitting Diode (OLED) driver.
Fig. 2A is that the display panel do not put upside down up and down originally shows the image data without inverting processing up and down；Fig. 2 B is
The display panel put upside down up and down shows the image data without inverting processing up and down；Fig. 2 C are that the display panel put upside down up and down is shown
The positive display of script can be maintained by the image data that inverts that treated up and down by showing.
Fig. 3 is the schematic diagram for carrying out reversion up and down to original image data through front end source in the prior art.
Fig. 4 is the schematic diagram reversely scanned to display panel through gate pole driver in the prior art.
Fig. 5 A and Fig. 5 B respectively in the prior art use memory through OLED drivers and are just writing backward read and retrography just
The schematic diagram of the mode of reading.
Fig. 6 A and Fig. 6 B are respectively in the prior art in reading frame data in the same frame cycle with writing current frame number
According to the schematic diagram using opposite direction.
Fig. 7 A and Fig. 7 B are respectively in the prior art in reading frame data in the same frame cycle with writing current frame number
According to the sequence diagram for causing to occur tear effect in dynamic menu using opposite direction.
Fig. 8 is the schematic diagram according to the driving circuit of the specific embodiment of the present invention.
Fig. 9 A and Fig. 9 B are respectively that the present invention is adopted in reading frame data in the same frame cycle with writing current frame data
With the schematic diagram of equidirectional.
Figure 10 A and Figure 10 B are respectively the present invention in reading frame data in the same frame cycle and the current frame data of write-in
System can avoid the sequence diagram that tear effect occurs using equidirectional.
Figure 11 is the flow chart according to the driving circuit operation method of the another specific embodiment of the present invention.
Main element symbol description：
DR：OLED drivers
PL：Display panel
HAP：Front end source
GD：Gate pole driver
M：Memory
DAT0：Raw video data
DAT：Image data
W, W1~W6：Write activity
R, R1~R5：Read action
S：Scanning mechanism
TF1~TF6：The frame cycle in first frame cycle~the 6th
T1~t11：Time
G1~GN：The first row pixel~nth row of pixels
L1~LY：First row of memory cells~Y row of memory cells
DAT’：The image data inverted up and down
8：Driving circuit
80：Receiving unit
82：Processing unit
84：Memory
86：Output unit
F1~f5：The frame image of first frame image~the 5th
F1 '~f4 '：4th frame image of the first frame image inverted up and down~invert up and down
S10~S16：Step
Specific embodiment
A specific embodiment according to the present invention is a kind of driving circuit.In this embodiment, driving circuit is arranged at aobvious
In showing device and Organic Light Emitting Diode (OLED) display panel is coupled, but not limited to this.
It refer to Fig. 8, driving circuits of the Fig. 8 therefore in embodiment is applied to the schematic diagram of driving display panel.Such as Fig. 8 institutes
Show, driving circuit 8 can be coupled between front end source HAP and display panel PL.Driving circuit 8 can include receiving unit 80, place
Manage unit 82, memory 84 and output unit 86.Wherein, receiving unit 80 is respectively coupled to front end source HAP and processing unit 82；
Processing unit 82 is respectively coupled to receiving unit 80, memory 84 and output unit 86；Memory 84 couples processing unit 82；Output
Unit 86 is respectively coupled to processing unit 82 and display panel PL.Display panel PL can include gate pole driver GD, such as Gate On
Array (GOA) circuit, but not limited to this.
In this embodiment, receiving unit 80 in driving circuit 8 to receive from extraneous image data DAT,
Middle image data DAT can include N frame images, and N is positive integer.In fact, the shadow received by the receiving unit 80 of driving circuit 8
As data DAT can be that original image data DAT0 is carried out by front end source HAP to transmit again after processing is image data DAT
To driving circuit 8, but not limited to this.
Processing unit 82 in driving circuit 8 is writing the image data DAT received by receiving unit 80 to depositing
Image data DAT ' is read in reservoir 84 and from memory 84, and can pass through output unit 86 and export image data DAT '
To display panel PL.In fact, processing unit 82 writes image data DAT to memory 84 and processing unit 82 from memory
The image data DAT ' read in 84 understands self reversion.
Gate pole driver GD on display panel PL can be sequentially to the lock of every one-row pixels (Pixel) on display panel PL
The forward direction that pole switch G1~GN carries out vertical direction scans S, causes the image data DAT ' that driving circuit 8 is transmitted can be with a line
Then the mode of a line is stored in every one-row pixels on display panel PL, thus allows display panel PL being capable of image data displaying
DAT’。
Then, referring to Fig. 9 A to Fig. 9 B and Figure 10 A to Figure 10 B.Fig. 9 A and Fig. 9 B are respectively the present invention in same
The schematic diagram that frame data uses equidirectional with writing current frame data system is read in the frame cycle.Figure 10 A and Figure 10 B distinguish
It can avoid tearing using equidirectional in reading frame data in the same frame cycle and the current frame data of write-in for the present invention
The sequence diagram that effect occurs.
As shown in Fig. 9 A and Figure 10 A, in first segment time (first frame cycle) TF1, processing unit 82 is held in time t1
Row the first write activity W1, with first direction (from top to bottom, from the first row of memory cells L1 to Y row of memory cells LY)
First frame image f1 in image data DAT is write into memory M.In in second segment time (the second frame cycle) TF2, locate
It manages unit 82 and performs the first read action R1 prior to time t2, with second direction (from the bottom to top, from Y row of memory cells LY
To the first row of memory cells L1) the first frame image f1 ' of reversion up and down is read from memory M, perform the then at time t3
Two write activity W2, with second direction (from the bottom to top, from Y row of memory cells LY to the first row of memory cells L1) by shadow
As the second frame image f2 in data DAT is write into memory M.
It should be noted that second segment time (the second frame cycle) TF2 need to be later than first segment time (first frame cycle) TF1 and
Second direction (from the bottom to top, from Y row of memory cells LY to the first row of memory cells L1) need to first direction (by up to
Under, from the first row of memory cells L1 to Y row of memory cells LY) on the contrary, processing unit 82 is caused to be read from memory M
The first frame image f1 ' that the inverts up and down first frame image f1 that can be write with processing unit 82 to memory M self is anti-
Turn.
In addition, in second segment time (the second frame cycle) TF2, processing unit 82 performs the time of the second write activity W2
T3 need to be later than the time t2 that processing unit 82 performs the first read action R1, and processing unit 82 performs the second write activity W2's
Writing direction need to be identical (being second direction) with the read direction of first read action R1 of the execution of processing unit 82.Thereby, when
Second frame image f2 can't override the first frame image f1 being not yet read in memory M when being written into memory M, therefore
The present invention can effectively avoid the generation for the tear effect that the prior art suffered from.
Similarly, in the 3rd section of time (the 3rd frame cycle) TF3, processing unit 82 performs the second reading prior to time t4 and moves
Make R2, read the second frame image f2 ' of reversion up and down from memory M with first direction (from top to bottom), held then at time t5
The 3rd write activity W3 of row is write the 3rd frame image f3 in image data DAT to storage with first direction (from top to bottom)
In device M.
Similarly, the 3rd section of time (the 3rd frame cycle) TF3 need to be later than second segment time (the second frame cycle) TF2 and first
Direction (from top to bottom) and second direction (from the bottom to top) are on the contrary, that processing unit 82 is caused to be read from memory M is anti-up and down
The the second frame image f2 ' turned can be write with processing unit 82 to self reversion of the second frame image f2 of memory M.
In addition, in the 3rd section of time (the 3rd frame cycle) TF3, processing unit 82 performs the time of the 3rd write activity W3
T5 need to be later than the time t4 that processing unit 82 performs the second read action R2, and processing unit 82 performs the 3rd write activity W3's
Writing direction need to be identical (being first direction) with the read direction of second read action R2 of the execution of processing unit 82.Thereby, when
3rd frame image f3 can't override the second frame image f2 being not yet read in memory M when being written into memory M, therefore
The present invention can effectively avoid the generation for the tear effect that the prior art suffered from.
As for next 4th time (the 4th frame cycle) TF4, the 5th section of time (the 5th frame cycle) TF5 ...
Situation then can the rest may be inferred, therefore do not repeated separately in this.
In another embodiment, as shown in Figure 9 B, in first segment time (first frame cycle) TF1, processing unit 82 is held
Row the first write activity W1 is write the first frame image f1 in image data DAT to storage with second direction (from the bottom to top)
In device M.In in second segment time (the second frame cycle) TF2, processing unit 82 first carries out the first read action R1, with first direction
(from top to bottom) the first frame image f1 ' of reversion up and down is read from memory M, then performs the second write activity W2 again, with
First direction (from top to bottom) writes the second frame image f2 in image data DAT into memory M.In the 3rd time
In (the 3rd frame cycle) TF3, processing unit 82 first carries out the second read action R2, with second direction (from the bottom to top) from memory
The second frame image f2 ' of reversion up and down is read in M, the 3rd write activity W3 is then performed again, with second direction (from the bottom to top)
The 3rd frame image f3 in image data DAT is write into memory M.As for (the 4th frame week next 4th time
Phase) TF4, the 5th section of time (the 5th frame cycle) TF5 ... situation then can the rest may be inferred, therefore do not repeated separately in this.
In another embodiment, as shown in Figure 10 B, in first segment time (first frame cycle) TF1, processing unit 82 in
Time t1 performs the first write activity W1, is write the first frame image in image data DAT with first direction (from top to bottom)
Into memory M.In in second segment time (the second frame cycle) TF2, processing unit 82 performs the first reading prior to time t2 and moves
Make R1, first frame image is read from memory M with second direction (from the bottom to top), the second write activity is performed then at time t3
W2 is write the second frame image in image data DAT into memory M with second direction (from the bottom to top).
In in the 3rd section of time (the 3rd frame cycle) TF3, processing unit 82 performs the second read action R2 in time t4, with
First direction (from top to bottom) reads the second frame image from memory M, but next simultaneously no third write activity W3 occurs, generation
Data do not update table at this time.
In in the 4th section of time (the 4th frame cycle) TF4, processing unit 82 performs the 3rd read action R3, dimension in time t5
It holds and the 3rd frame image is read from memory M with the first direction (from top to bottom) identical with the second read action R2,
In in the 5th section of time (the 5th frame cycle) TF5, processing unit 82 performs the 4th read action R4 prior to time t6,
4th frame image is read from memory M with first direction (from top to bottom), the 5th write activity W5 is performed then at time t7, with
First direction (from top to bottom) writes the 5th frame image in image data DAT into memory M.
In in the 6th section of time (the 6th frame cycle) TF6, processing unit 82 performs the 5th read action R5 prior to time t8,
5th frame image is read from memory M with second direction (from the bottom to top), the 6th write activity W6 is performed then at time t9, with
Second direction (from the bottom to top) writes the 6th frame image in image data DAT into memory M.Remaining can the rest may be inferred,
It is not repeated separately in this.
Another specific embodiment according to the present invention is a kind of driving circuit operation method.In this embodiment, driving electricity
Road operation method system is operating driving circuit.Driving circuit couples display panel.Driving circuit includes memory.It should in reality
In, display panel can be Organic Light Emitting Diode (OLED) display panel, and memory can be static random access memory
Device (Static Random AccessMemory, SRAM), but not limited to this.
It refer to Figure 11, the flow chart of Figure 11 driving circuit operation methods in embodiment therefore.As shown in figure 11, drive
Circuit operation method comprises the steps of：
Step S10：Driving circuit receives image data, and wherein image data includes N frame images, and N is positive integer.It is actual
On, the image data received by driving circuit can be transmitted again after being handled by front end source original image data
To driving circuit, but not limited to this.
Step S12：Within the first segment time (first frame cycle), driving circuit is with first direction by the in image data
One frame image is write into memory.
Step S14：In in the second segment time (the second frame cycle), driving circuit is first read with second direction from memory
First frame image and export the second frame image in image data is write to memory to display panel, then with second direction
In.
It should be noted that the second segment time (the second frame cycle) need to be later than first segment time (first frame cycle) and second party
To need to opposite with first direction (such as first direction and second direction be respectively direction from top to bottom and side from the bottom to top
To), use first frame image that step S14 is read and step S12 write to memory first frame image that
This is inverted up and down.That is, the time that driving circuit reads first frame image from memory need to be than driving circuit by first
Frame image writes to one frame cycle of evening time of memory and driving circuit the direction that first frame image is read from memory
It is opposite first frame image need to be write into direction to memory with driving circuit.
In addition, in step S14, within the second segment time (the second frame cycle), driving circuit need to be completed first from memory
Start to write the second frame image to memory again after middle reading first frame image, and driving circuit by the second frame image write to
The read direction that the write-in direction of memory need to read first frame image with driving circuit from memory is identical.That is,
The time that driving circuit writes the second frame image to memory need to be later than driving circuit and first frame image is read from memory
Time and write-in direction need to be identical with read direction (being second direction).Therefore, when the second frame image is written into storage
The first frame image being not yet read in memory can't be override during device, therefore can effectively avoid the generation of tear effect.
Step S16：In the 3rd time (the 3rd frame cycle), driving circuit reads from memory the with first direction
Two frame images are simultaneously exported to display panel, wherein the 3rd time is later than the second segment time.That is, driving circuit is from storage
The time of the second frame image is read in device to write late frame week time to memory by the second frame image than driving circuit
The direction that phase and driving circuit read the second frame image from memory need to write the second frame image to storage with driving circuit
The direction of device is opposite.
In practical application, if any new image is not write in the 3rd section of interior driving circuit of time (the 3rd frame cycle)
Enter to memory, then in the 4th time (the 4th frame cycle), driving circuit can read with first direction from memory the
Two frame images are simultaneously exported to display panel, wherein the 4th time (the 4th frame cycle) need to be later than (the 3rd frame week the 3rd time
Phase).That is, due to the image stored by memory, update (that is, is not write without new image within a certain frame cycle
Enter to memory), then driving circuit can maintain the read direction of script to read storage originally from memory within the next frame cycle
The image deposited simultaneously is exported to display panel.
On the other hand, if being updated in the image stored by the 3rd section of time (the 3rd frame cycle) built-in storage, also
I.e. in the 3rd time (the 3rd frame cycle), after the completion of driving circuit reads the second frame image with first direction, driving electricity
Lu Huizai is write the 3rd frame image into memory with first direction.That is, driving circuit writes the 3rd frame image
To memory time need to be later than driving circuit read from memory the second frame image time and write-in direction need to be with reading
Direction is identical (being first direction).Therefore, can't be override when the 3rd frame image is written into memory in memory
The second frame image being not yet read, therefore can effectively avoid the generation of tear effect.
Then, in the 4th time (the 4th frame cycle), driving circuit reads the 3rd with second direction from memory
Frame image is simultaneously exported to display panel, wherein the 4th time (the 4th frame cycle) need to be later than (the 3rd frame week the 3rd time
Phase).That is, the time that driving circuit reads the 3rd frame image from memory need to be write the 3rd frame image than driving circuit
The direction for entering to one frame cycle of evening time of memory and driving circuit to read the 3rd frame image from memory need to be with driving
It is opposite that 3rd frame image is write direction to memory by circuit.Remaining can the rest may be inferred, is not repeated separately in this.
Compared to the prior art, driving circuit and its operation method according to the present invention are write using a kind of novel memory
Enter and read method, the display panel put upside down up and down can not only be coordinated to carry out the image data of script positive display anti-up and down
Turn, also can effectively avoid traditional driving circuit and tear effect caused during reversion up and down is carried out to dynamic menu, therefore, this
The driving circuit and its operation method of invention are not required to through gate pole driver (such as the GOA electricity on front end source and display panel
Road) image data is carried out to invert the reversion up and down that tableaux and dynamic menu can be achieved at the same time up and down, therefore can significantly increase
Add its use scope and practicability.
It is the feature and spirit for wishing to more clearly describe the present invention by the above detailed description of preferred embodiments, and
Not scope of the invention is any limitation as with above-mentioned disclosed preferred embodiment.On the contrary, the purpose is to wish
Various changes can be covered and have being arranged in the scope of the scope of the claims to be applied of the invention of equality.
Claims (14)
1. a kind of driving circuit operation method, to operate one drive circuit, which couples a display panel, the driving
Circuit includes a memory, which is characterized in that the driving circuit operation method comprises the steps of：
(a) driving circuit receives an image data, which includes N frame images, and N is positive integer；
(b) in the first segment time, the first frame image in the image data is write to the storage with a first direction
In device；And
(c) in the second segment time, elder generation reads the first frame image from the memory with a second direction and exports to this
Display panel, then write one second frame image in the image data into the memory with the second direction；
Wherein, which is later than the first segment time and the second direction and the first direction are on the contrary, cause step (c)
The first frame image read and self reversion of the first frame image of step (b) write-in to the memory.
2. driving circuit operation method as described in claim 1, which is characterized in that the display panel system is an organic light emission two
Pole pipe (Organic Light-Emitting Diode, OLED) display panel.
3. driving circuit operation method as described in claim 1, which is characterized in that the first direction and second direction difference
For direction from top to bottom and direction from the bottom to top.
4. the driving circuit operation method as described in claim 1, which is characterized in that in the second segment time, by this
Two frame images, which were write to the time of the memory, is later than the time that the first frame image is read from the memory and write-in direction
It is the second direction with read direction, will not covers what is be not yet read when the second frame image being caused to write to the memory
The first frame image, to avoid occurring tearing effect.
5. driving circuit operation method as described in claim 1, which is characterized in that further include the following steps：
In in one the 3rd time, which is read from the memory with the first direction and is exported to the display surface
Plate, wherein the 3rd time are later than the second segment time.
6. driving circuit operation method as claimed in claim 5, which is characterized in that if in the 3rd time and no-trump shadow
As write-in to the memory action, then the driving circuit operation method further include the following steps：
In in one the 4th time, which is read from the memory with the first direction and is exported to the display surface
Plate, wherein the 4th time are later than the 3rd time.
7. driving circuit operation method as claimed in claim 5, which is characterized in that further include the following steps：
In in the 3rd time, after the completion of the action of the second frame image is read, then with the first direction by the image number
One the 3rd frame image in is write into the memory；And
In in one the 4th time, the 3rd frame image is read from the memory with the second direction and is exported to the display surface
Plate, wherein the 4th time are later than the 3rd time.
8. a kind of driving circuit couples a display panel, which is characterized in that the driving circuit includes：
One receiving unit, to receive an image data, which includes N frame images, and N is positive integer；
One memory；
One processing unit is respectively coupled to the receiving unit and the memory, and in the first segment time, the processing unit is with one
One direction writes the first frame image in the image data into the memory, in the second segment time, the processing list
It is first first to read the first frame image from the memory with a second direction, then with the second direction by one in the image data
Second frame image is write into the memory；And
One output unit is respectively coupled to the processing unit and the display panel, to export the first frame image to the display surface
Plate；
Wherein, which is later than the first segment time and the second direction and the first direction are on the contrary, cause the processing
The first frame image that unit is read from the memory and the processing unit write to the memory the first frame image that
This is inverted up and down.
9. driving circuit as claimed in claim 8, which is characterized in that the display panel is an organic light-emitting diode display face
Plate.
10. driving circuit as claimed in claim 8, which is characterized in that the first direction and the second direction are respectively by upper
Direction under and direction from the bottom to top.
11. driving circuit as claimed in claim 8, which is characterized in that in the second segment time, the processing unit by this
Two frame images write the time for being later than the processing unit to the time of the memory and the first frame image being read from the memory
And write-in direction and read direction are the second direction, and the processing unit is caused to write the second frame image to the memory
First frame image that Shi Buhui coverings are not yet read by the processing unit, to avoid occurring tearing effect.
12. driving circuit as claimed in claim 8, which is characterized in that in one the 3rd time, the processing unit with this
The second frame image is read from the memory and is exported through the output unit to the display panel, wherein the 3rd in one direction
The section time is later than the second segment time.
13. driving circuit as claimed in claim 12, which is characterized in that if being had no in the processing unit in the 3rd time
Image is write to the action of the memory, then in one the 4th time, the processing unit is with the first direction from the storage
The second frame image is read in device and is exported to the display panel through the output unit, wherein the 4th time be later than this
Three times.
14. driving circuit as claimed in claim 12, which is characterized in that in the 3rd time, when the processing unit is complete
After into the action for reading the second frame image, the processing unit is again with the first direction by one the 3rd frame shadow in the image data
As write-in is into the memory；In in one the 4th time, which is read with the second direction from the memory should
3rd frame image is simultaneously exported through the output unit to the display panel, and wherein the 4th time is later than the 3rd time.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US201662426333P | 2016-11-25 | 2016-11-25 | |
| US62/426,333 | 2016-11-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108109584A true CN108109584A (en) | 2018-06-01 |
Family
ID=62190358
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711200484.4A Withdrawn CN108109584A (en) | 2016-11-25 | 2017-11-27 | Driving circuit and its operation method |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US20180151128A1 (en) |
| CN (1) | CN108109584A (en) |
| TW (1) | TWI653619B (en) |
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| CN108874353A (en) * | 2018-06-28 | 2018-11-23 | 新港海岸(北京)科技有限公司 | The access method of data, image display method and relevant apparatus in video memory |
| CN109658867A (en) * | 2018-12-10 | 2019-04-19 | 北京欧徕德微电子技术有限公司 | Data read-write method and its device |
| CN109725801A (en) * | 2018-12-17 | 2019-05-07 | 深圳市爱协生科技有限公司 | A kind of method that driving chip control display picture is spun upside down |
| CN114153415A (en) * | 2021-11-27 | 2022-03-08 | 深圳曦华科技有限公司 | Image frame rate control method and related product |
| CN114495792A (en) * | 2021-02-02 | 2022-05-13 | 友达光电股份有限公司 | Display driving circuit and display driving method |
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- 2017-11-24 TW TW106141035A patent/TWI653619B/en not_active IP Right Cessation
- 2017-11-27 CN CN201711200484.4A patent/CN108109584A/en not_active Withdrawn
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| US20110187730A1 (en) * | 2010-02-03 | 2011-08-04 | Bong-Ju Jun | Method of driving display panel and display apparatus for performing the same |
| TW201142809A (en) * | 2010-05-20 | 2011-12-01 | Himax Tech Ltd | System and method for storing and accessing pixel data in a graphics display device |
| US20120249563A1 (en) * | 2011-03-31 | 2012-10-04 | David Wyatt | Method and apparatus to support a self-refreshing display device coupled to a graphics controller |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108874353A (en) * | 2018-06-28 | 2018-11-23 | 新港海岸(北京)科技有限公司 | The access method of data, image display method and relevant apparatus in video memory |
| CN109658867A (en) * | 2018-12-10 | 2019-04-19 | 北京欧徕德微电子技术有限公司 | Data read-write method and its device |
| CN109725801A (en) * | 2018-12-17 | 2019-05-07 | 深圳市爱协生科技有限公司 | A kind of method that driving chip control display picture is spun upside down |
| CN114495792A (en) * | 2021-02-02 | 2022-05-13 | 友达光电股份有限公司 | Display driving circuit and display driving method |
| CN114495792B (en) * | 2021-02-02 | 2023-12-26 | 友达光电股份有限公司 | Display driving circuit and display driving method |
| CN114153415A (en) * | 2021-11-27 | 2022-03-08 | 深圳曦华科技有限公司 | Image frame rate control method and related product |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201833895A (en) | 2018-09-16 |
| US20180151128A1 (en) | 2018-05-31 |
| TWI653619B (en) | 2019-03-11 |
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Application publication date: 20180601 |